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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Depository for semen during insemination. where urine leaves the body
Sperm survival specs
sow estrus cycle
organs used in spermatogenesis
vagina
2. Birthing process (termination of gestation)
Parturition
cow estrus cycle
Hormones from both the fetus and the mom.
organs used in spermatogenesis
3. FEED
cowper's gland
#1 cost in production
vulva
Dairy Cattle Gestation
4. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
eminal vesicles
rectal palpation (BSE)
humans: stress level vs sperm
cow ovulation
5. Why does estrus happen before ovulation?
visual evaluation (BSE)
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
Sperm growth rate
leydid or interstitial cells
6. 2 month growth cycle. stored in the epididymis of the bull
Dairy Cattle Gestation
sow gestation
Sperm growth rate
Follical Stimulating in males
7. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat
functions of progestrone
effects of estrogen
dry-off time in dairy cattle
estrus
8. Look for infection - split - and rupture of the penis
rectal palpation (BSE)
penis and prepuce observation (BSE)
Holstein Cow
scrotal circumference (BSE)
9. Check feet and legs - look for masculine traits in build such as crest and muscling
Size of cow in relation to the amount of milk produced
penis and prepuce observation (BSE)
6-8 weeks
visual evaluation (BSE)
10. Animals which have many estrous periods per year (ex: cow - sow)
spermatogenesis
sow ovulation
dry-off time in dairy cattle
polyestrous
11. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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12. Urinary calculi.
testosterone
Dairy calves are removed from cow at birth to...
kidney stones also called ________ ___________ can develop in the sigmoid flexure
testis (gonads)
13. What makes the milk flow through the mammary glands?
Lutinizing Hormone in males
Blood
estrus
cryptorchid
14. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market
monorchid
reasons for castration
elastrator
Bull's fibro-elastic penis
15. Animal which has been castrated after puberty
van deferens
stag
ewe gestation
Follical Stimulating in males
16. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
Avg. bull specs
epididymis: definition - 3 parts - 4 functions
uterus
spermatogenesis
17. Important 'landmark' during palpation
cervix
eminal vesicles
mare's estrous cycle
hypothalamus and pituitary gland
18. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co
Hard
visual evaluation (BSE)
effects of BST
kidney stones also called ________ ___________ can develop in the sigmoid flexure
19. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation
butterfat
cowper's gland
cryptorchid
things to check for in a breeding soundness exam (BSE)
20. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has
Bull's fibro-elastic penis
libido test (BSE)
rectal palpation (BSE)
pelvis
21. Prevent the cow from getting an infection from the calve
#1 cost in production
rectal palpation (BSE)
Dairy calves are removed from cow at birth to...
ewe ovulation
22. (switzerland) 2nd in size and milk production - most muscle -
Hard
Follical Stimulating in males
sigmoid flexure
Brown Swiss Cow
23. (FSH) causes egg to mature in females
Sperm survival specs
mare estrus
functions of progestrone
Follical Stimulating in females
24. 4-6 days
things to check for in a breeding soundness exam (BSE)
mare estrus
scrotum
kidney stones also called ________ ___________ can develop in the sigmoid flexure
25. 19-23 (21) days
urethra
penis proper
penis sizes vs delivering methods
sow estrus cycle
26. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
effects of estrogen
retractor muscles
mare ovulation
monorchid
27. What about the sperm for a bull which has been castrated but still has testicles?
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
penis sizes vs delivering methods
Reasons for gestation length being affected
why does the cow need fat deposits during pregnancy?
28. 1-2 days
accessory sex glands
ewe estrus
polyestrous
seminiferous tubules
29. Why does estrus happen before ovulation?
cryptorchid
you want as much sperm as possible to come in contact with the egg before ovulation. the main idea is to have the sperm already in the oviduct when the egg passes through
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
Sperm survival specs
30. Can survive ~7 days in cow. vast majority <48 hours
6-8 weeks
Dairy Cattle milking schedule
estrous
Sperm survival specs
31. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm
Blood
elastrator
scrotal circumference (BSE)
hypothalamus and pituitary gland
32. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.
ewe ovulation
effects of estrogen
Reasons for gestation length being affected
mare gestation
33. Sperm production
colostrum
cow estrus cycle
spermatogenesis
Hormones from both the fetus and the mom.
34. Actual heat cycle (period)
estrus
van deferens
humans: stress level vs sperm
reasons for castration
35. 336 days
~1 month
dry-off time in dairy cattle
prostate gland
mare gestation
36. Milk is 15% ________ and 85% __________.
epididymis: definition - 3 parts - 4 functions
dry matter and water
Dairy Cattle milking schedule
cremaster muscle
37. Birthing process (termination of gestation)
Parturition
penis and prepuce observation (BSE)
colostrum
rectal palpation (BSE)
38. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
Mares
mare's estrous cycle
femininity of a heifer
pelvis
39. Not under a timeline - cow can not be sold as steak
Grading choice
reason for seasonal breeding periods
seasonally polyestrous
eminal vesicles
40. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.
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41. 1-3 days
sow estrus
4 major reasons for culling dairy cows
Dairy Cattle Lactation (standard)
prostaglandin
42. 16-20 hours
~1 month
age and castration
cow estrus
Where livelihood is in agriculture
43. Depository for semen during insemination. where urine leaves the body
reason for seasonal breeding periods
functions of progestrone
Dairy Cattle milking schedule
vagina
44. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.
stag
growth lost from castration methods (knife & band)
colostrum
leydid or interstitial cells
45. % of fat in milk. makes cheeses and ice cream. regulates cost of milk
eminal vesicles
ewe's estrous cycle
penis and prepuce observation (BSE)
butterfat
46. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
Follical Stimulating in males
effects of estrogen
penis sizes vs delivering methods
scrotum
47. 283 days
Lutinizing Hormone in males
cow gestation
vulva
estrous
48. ~60 days before calving
dry-off time in dairy cattle
Culls bulls earlier (2 reasons)
mare estrus cycle
Reasons for gestation length being affected
49. Duct through penis that carries sperm and urine
mastitis
behavioral signs of estrus
oviducts
urethra
50. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).
effects of BST
cow estrus
hormones
kidney stones also called ________ ___________ can develop in the sigmoid flexure